**So far this month, two New York City police commanders have been arrested on corruption allegations, an officer in Killeen, Tex., has been accused of sexually assaulting a female driver, a Philadelphia police officer has been charged with extortion of a drug dealer, and an officer in Honolulu has been accused of raping a 14-year-old girl.
Such sporadic news accounts of police officers being arrested led one group of researchers to a question: How much crime do police officers commit? No one was keeping track, much as no one was tracking how often police officers shoot and kill civilians, although both may involve use of police power and abuse of public trust.
Now there is an answer: Police officers are arrested about 1,100 times a year, or roughly three officers charged every day, according to a new national study.**
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